Contactless Mobile Terminal Battery Recharging via Induced Current
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies for mobile terminals do not effectively address the issue of contactless recharging of mobile terminal batteries, particularly in scenarios where electromagnetic fields can induce current for power supply but are insufficient for quality service or battery recharging.
Innovation Solution
A contactless recharging method is implemented by detecting electromagnetic fields near the mobile terminal and using induced current to recharge the battery, with a contactless module capable of automatic detection and power management to prioritize transactions over recharging when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electromagnetic fields are used for contactless recharging, then physical charger connections are eliminated, but power supply reliability is insufficient for quality service
Solution Approach 1:
The system dynamically switches between contactless recharging mode and contact-based recharging mode based on power availability and service requirements. The contactless module operates dynamically adjusting power absorption from electromagnetic fields, and transitions to contact-based charging when higher reliability is needed, making the power supply system adaptive rather than static.
Solution Approach 2:
The mobile terminal incorporates both contactless power reception capability and traditional contact-based charging capability within a single device. The dual-interface card reader and contactless module share the power management system, allowing the device to universally accept power from both electromagnetic fields and physical chargers, eliminating the need to choose one method over the other.
2Device complexity
If contactless recharging is implemented, then device architecture impact is minimized, but power induction capability is insufficient for battery recharging
Solution Approach 1:
A contactless module acts as an intermediary between electromagnetic fields and the battery system. This module includes an antenna for receiving electromagnetic energy, a rectifier circuit for converting RF signals to DC, and a power management unit for regulating power flow. The intermediary processes transform weak electromagnetic fields into sufficient charging power while maintaining clean integration with existing battery architecture.
Solution Approach 2:
The contactless recharging components are nested within the existing mobile terminal structure. The antenna is integrated into the device housing, the contactless module is housed within the terminal body, and the power management circuits share existing power regulation infrastructure. This nested arrangement minimizes additional architectural impact while accumulating sufficient power induction capability through layered integration.
3Productivity
If electromagnetic field detection is continuous, then power opportunities are not missed, but energy consumption increases
Solution Approach 1:
Instead of continuous detection, the system employs periodic sampling of electromagnetic field presence at predetermined intervals. The contactless module activates the detector only at scheduled times to check for available power fields, then enters a low-power state between detections. This periodic approach maintains awareness of recharging opportunities while dramatically reducing the average energy consumption compared to continuous monitoring.
Solution Approach 2:
The power detection and acquisition system is designed to be self-activating. When the battery charge level drops below a threshold or when power is detected during periodic sampling, the system automatically initiates recharging without requiring manual user intervention. The detector self-regulates its operation based on battery state and environmental conditions, minimizing unnecessary energy expenditure while ensuring recharging occurs when beneficial.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables battery recharging without the need for physical chargers, maintaining low impact on the mobile handset architecture and ensuring continuous power supply for essential functions, especially in battery-off or low-power situations.
Implementation Method 1
The contactless recharging of a mobile terminal battery is performed by detecting electromagnetic fields near the mobile terminal and inducing current therefrom to be used in recharging the battery of the mobile terminal
Data Source
AI summary
A mobile terminal has a contactless function module that is used to perform a contactless transaction and also used to perform battery recharging. The mobile terminal has a power source operatively connected with the contactless function module and adapted to be recharged by induced current created by electromagnetic fields detected by the contactless function module.